As a strange undersea being, Bruxceus detests intruders in its domain and repels them with pulsing psychic energy from its cranium. The deep-sea caverns it claims are often decorated with bright coral and undersea plants.
It is described in mythology as the Pokémon that shaped the universe with its 1,000 arms. When it unleashes its psychic power from the protuberance on its head, the grating sound of grinding teeth echoes through the area.